public class ImageEffects { public enum SingleColorTypeEnum { /// <summary> /// 平均值法 /// </summary> Average = 1, /// <summary> /// 最大值法 /// </summary> Max = 2, /// <summary> /// 加权平均值法 /// </summary> Weighting = 3 }; /// <summary> /// 将图片转换成黑白色效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> /// <param name="type">HeiBaiType 枚举</param> public static Bitmap SingleColor(Bitmap bmp,SingleColorTypeEnum type) { Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); Color pixel; for (int x = 0; x < Width; x++) { for (int y = 0; y < Height; y++) { pixel = bmp.GetPixel(x, y); int r, g, b, Result = 0; r = pixel.R; g = pixel.G; b = pixel.B; switch (type) { case SingleColorTypeEnum.Average://平均值法 Result = ((r + g + b) / 3); break; case SingleColorTypeEnum.Max://最大值法 Result = r > g ? r : g; Result = Result > b ? Result : b; break; case SingleColorTypeEnum.Weighting://加权平均值法 Result = ((int)(0.7 * r) + (int)(0.2 * g) + (int)(0.1 * b)); break; } newBitmap.SetPixel(x, y, Color.FromArgb(Result, Result, Result)); } } } catch (Exception ex) { throw ex; } return newBitmap; } /// <summary> /// 将图片转换成黑白色效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap SingleColor(Bitmap bmp) { //确定图像的宽和高 int width = bmp.Width; int height = bmp.Height; int pix = 0; //LockBits将Bitmap锁定到内存中 BitmapData data = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); unsafe { //p指向地址 byte* p = (byte*)data.Scan0;//8位无符号整数 int offset = data.Stride - width * 3; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { pix = (int)(0.7 * p[0]) + (int)(0.2 * p[1]) + (int)(0.1 * p[2]); pix = Math.Min(255, pix); p[0] = (byte)pix; p[1] = (byte)pix; p[2] = (byte)pix; p += 3; } // x p += offset; } // y } bmp.UnlockBits(data);//从内存中解除锁定 return bmp; } /// <summary> /// 雾化效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Atomization(Bitmap bmp) { Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); Color pixel; for (int x = 1; x < Width - 1; x++) { for (int y = 1; y < Height - 1; y++) { Random MyRandom = new Random(); int k = MyRandom.Next(123456); //像素块大小 int dx = x + k % 19; int dy = y + k % 19; if (dx >= Width) dx = Width - 1; if (dy >= Height) dy = Height - 1; pixel = bmp.GetPixel(dx, dy); newBitmap.SetPixel(x, y, pixel); } } } catch (Exception ex) { throw ex; } return newBitmap; } /// <summary> /// 柔化 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Soften(Bitmap bmp) { Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); Color pixel; //高斯模板 int[] Gauss ={ 1, 2, 1, 2, 4, 2, 1, 2, 1 }; for (int x = 1; x < Width - 1; x++) for (int y = 1; y < Height - 1; y++) { int r = 0, g = 0, b = 0; int Index = 0; for (int col = -1; col <= 1; col++) for (int row = -1; row <= 1; row++) { pixel = bmp.GetPixel(x + row, y + col); r += pixel.R * Gauss[Index]; g += pixel.G * Gauss[Index]; b += pixel.B * Gauss[Index]; Index++; } r /= 16; g /= 16; b /= 16; //处理颜色值溢出 r = r > 255 ? 255 : r; r = r < 0 ? 0 : r; g = g > 255 ? 255 : g; g = g < 0 ? 0 : g; b = b > 255 ? 255 : b; b = b < 0 ? 0 : b; newBitmap.SetPixel(x - 1, y - 1, Color.FromArgb(r, g, b)); } } catch (Exception ex) { throw ex; } return newBitmap; } /// <summary> /// 锐化效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Sharpen(Bitmap bmp) { Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); Color pixel; //拉普拉斯模板 int[] Laplacian ={ -1, -1, -1, -1, 9, -1, -1, -1, -1 }; for (int x = 1; x < Width - 1; x++) for (int y = 1; y < Height - 1; y++) { int r = 0, g = 0, b = 0; int Index = 0; for (int col = -1; col <= 1; col++) { for (int row = -1; row <= 1; row++) { pixel = bmp.GetPixel(x + row, y + col); r += pixel.R * Laplacian[Index]; g += pixel.G * Laplacian[Index]; b += pixel.B * Laplacian[Index]; Index++; } } //处理颜色值溢出 r = r > 255 ? 255 : r; r = r < 0 ? 0 : r; g = g > 255 ? 255 : g; g = g < 0 ? 0 : g; b = b > 255 ? 255 : b; b = b < 0 ? 0 : b; newBitmap.SetPixel(x - 1, y - 1, Color.FromArgb(r, g, b)); } } catch (Exception ex) { throw ex; } return newBitmap; } /// <summary> /// 底片效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Negative(Bitmap bmp) { Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); Color pixel; for (int x = 1; x < Width; x++) { for (int y = 1; y < Height; y++) { int r, g, b; pixel = bmp.GetPixel(x, y); r = 255 - pixel.R; g = 255 - pixel.G; b = 255 - pixel.B; newBitmap.SetPixel(x, y, Color.FromArgb(r, g, b)); } } } catch (Exception ex) { throw ex; } return newBitmap; } /// <summary> /// 浮雕效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Relief(Bitmap bmp) { Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); Color pixel1, pixel2; for (int x = 0; x < Width - 1; x++) { for (int y = 0; y < Height - 1; y++) { int r = 0, g = 0, b = 0; pixel1 = bmp.GetPixel(x, y); pixel2 = bmp.GetPixel(x + 1, y + 1); r = Math.Abs(pixel1.R - pixel2.R + 128); g = Math.Abs(pixel1.G - pixel2.G + 128); b = Math.Abs(pixel1.B - pixel2.B + 128); if (r > 255) r = 255; if (r < 0) r = 0; if (g > 255) g = 255; if (g < 0) g = 0; if (b > 255) b = 255; if (b < 0) b = 0; newBitmap.SetPixel(x, y, Color.FromArgb(r, g, b)); } } } catch (Exception ex) { throw ex; } return newBitmap; } /// <summary> /// 日光照射效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Halo(Bitmap bmp) { Bitmap myImage = null; try { Graphics gh = Graphics.FromImage(bmp); int Width = bmp.Width; int Height = bmp.Height; myImage = bmp.Clone(new RectangleF(0, 0, Width, Height), System.Drawing.Imaging.PixelFormat.DontCare); int A = Width / 2; int B = Height / 2; //MyCenter图片中心点，发亮此值会让强光中心发生偏移 Point MyCenter = new Point(Width / 2, Height / 2); //R强光照射面的半径，即”光晕” int R = Math.Min(Width / 2, Height / 2); for (int i = Width - 1; i >= 1; i--) { for (int j = Height - 1; j >= 1; j--) { float MyLength = (float)Math.Sqrt(Math.Pow((i - MyCenter.X), 2) + Math.Pow((j - MyCenter.Y), 2)); //如果像素位于”光晕”之内 if (MyLength < R) { Color MyColor = myImage.GetPixel(i, j); int r, g, b; //220亮度增加常量，该值越大，光亮度越强 float MyPixel = 220.0f * (1.0f - MyLength / R); r = MyColor.R + (int)MyPixel; r = Math.Max(0, Math.Min(r, 255)); g = MyColor.G + (int)MyPixel; g = Math.Max(0, Math.Min(g, 255)); b = MyColor.B + (int)MyPixel; b = Math.Max(0, Math.Min(b, 255)); //将增亮后的像素值回写到位图 Color MyNewColor = Color.FromArgb(255, r, g, b); myImage.SetPixel(i, j, MyNewColor); } } //重新绘制图片 gh.Clear(Color.White); gh.DrawImage(myImage, new Rectangle(0, 0, Width, Height)); } } catch (Exception ex) { throw ex; } return myImage; } /// <summary> /// 油画效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Painting(Bitmap bmp) { Bitmap myImage = null; try { Graphics gh = Graphics.FromImage(bmp); int width = bmp.Width; int height = bmp.Height; RectangleF rect = new RectangleF(0, 0, width, height); myImage = bmp.Clone(rect, System.Drawing.Imaging.PixelFormat.DontCare); //产生随机数序列 Random rnd = new Random(); //取不同的值决定油画效果的不同程度 int iModel = 2; int i = width - iModel; while (i > 1) { int j = height - iModel; while (j > 1) { int iPos = rnd.Next(100000) % iModel; //将该点的RGB值设置成附近iModel点之内的任一点 Color color = myImage.GetPixel(i + iPos, j + iPos); myImage.SetPixel(i, j, color); j = j - 1; } i = i - 1; } //重新绘制图像 gh.Clear(Color.White); gh.DrawImage(myImage, new Rectangle(0, 0, width, height)); } catch (Exception ex) { throw ex; } return myImage; } /// <summary> /// 积木特效 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Blocks(Bitmap bmp) { Bitmap bitmap = null; try { Graphics myGraphics = Graphics.FromImage(bmp) ; int myWidth, myHeight, i, j, iAvg, iPixel; Color myColor, myNewColor; RectangleF myRect; myWidth = bmp.Width; myHeight = bmp.Height; myRect = new RectangleF(0, 0, myWidth, myHeight); bitmap = bmp.Clone(myRect, System.Drawing.Imaging.PixelFormat.DontCare); i = 0; while (i < myWidth - 1) { j = 0; while (j < myHeight - 1) { myColor = bitmap.GetPixel(i, j); iAvg = (myColor.R + myColor.G + myColor.B) / 3; iPixel = 0; if (iAvg >= 128) iPixel = 255; else iPixel = 0; myNewColor = Color.FromArgb(255, iPixel, iPixel, iPixel); bitmap.SetPixel(i, j, myNewColor); j = j + 1; } i = i + 1; } myGraphics.Clear(Color.WhiteSmoke); myGraphics.DrawImage(bitmap, new Rectangle(0, 0, myWidth, myHeight)); } catch (Exception ex) { throw ex; } return bitmap; } }
public class ImageEffectsFast { public enum SingleColorTypeEnum { /// <summary> /// 平均值法 /// </summary> Average = 1, /// <summary> /// 最大值法 /// </summary> Max = 2, /// <summary> /// 加权平均值法 /// </summary> Weighting = 3 }; /// <summary> /// 将图片转换成黑白色效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> /// <param name="type">HeiBaiType 枚举</param> public static Bitmap SingleColor(Bitmap bmp) { return SingleColor(bmp, SingleColorTypeEnum.Weighting); } /// <summary> /// 将图片转换成黑白色效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap SingleColor(Bitmap bmp, SingleColorTypeEnum type) { //确定图像的宽和高 int width = bmp.Width; int height = bmp.Height; int pix = 0; //LockBits将Bitmap锁定到内存中 BitmapData data = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); unsafe { //p指向地址 byte* p = (byte*)data.Scan0;//8位无符号整数 int offset = data.Stride - width * 3; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { switch (type) { case SingleColorTypeEnum.Average://平均值法 pix = (p[0] + p[1] + p[2]) / 3; break; case SingleColorTypeEnum.Max://最大值法 pix = p[0] > p[1] ? p[0] : p[1]; pix = pix > p[2] ? pix : p[2]; break; case SingleColorTypeEnum.Weighting://加权平均值法 pix = (int)(0.7 * p[0]) + (int)(0.2 * p[1]) + (int)(0.1 * p[2]); break; } if (pix < 0) pix = 0; if(pix>0) pix = Math.Min(255, pix); p[0] = (byte)pix; p[1] = (byte)pix; p[2] = (byte)pix; p += 3; } // x p += offset; } // y } bmp.UnlockBits(data);//从内存中解除锁定 return bmp; } /// <summary> /// 底片效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Negative(Bitmap bmp) { //确定图像的宽和高 int width = bmp.Width; int height = bmp.Height; //LockBits将Bitmap锁定到内存中 BitmapData data = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); unsafe { //p指向地址 byte* p = (byte*)data.Scan0;//8位无符号整数 int offset = data.Stride - width * 3; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { for (int i = 0; i < 3; i++) { p[i] = (byte)(255 - p[i]); } p += 3; } // x p += offset; } // y } bmp.UnlockBits(data);//从内存中解除锁定 return bmp; } /// <summary> /// 浮雕效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Relief(Bitmap bmp) { //确定图像的宽和高 int width = bmp.Width; int height = bmp.Height; //LockBits将Bitmap锁定到内存中 BitmapData data = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); unsafe { //p指向地址 byte* p = (byte*)data.Scan0;//8位无符号整数 int offset = data.Stride - width * 3; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { int r = 0, g = 0, b = 0; if (x < width - 1&&y<height-1) { r = Math.Abs(p[0] - p[3 * (width + 1)] + 128); g = Math.Abs(p[1] - p[3 * (width + 1) + 1] + 128); b = Math.Abs(p[2] - p[3 * (width + 1) + 2] + 128); } else { r = 128; g = 128; b = 128; } if (r > 255) r = 255; if (r < 0) r = 0; if (g > 255) g = 255; if (g < 0) g = 0; if (b > 255) b = 255; if (b < 0) b = 0; p[0] = (byte)r; p[1] = (byte)g; p[2] = (byte)b; p += 3; } // x p += offset; } // y } bmp.UnlockBits(data);//从内存中解除锁定 return bmp; } /// <summary> /// 积木特效 /// </summary> /// <param name="bmp">Bitmap 对象</param> public static Bitmap Blocks(Bitmap bmp) { //确定图像的宽和高 int width = bmp.Width; int height = bmp.Height; //LockBits将Bitmap锁定到内存中 BitmapData data = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); unsafe { //p指向地址 byte* p = (byte*)data.Scan0;//8位无符号整数 int offset = data.Stride - width * 3; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { byte b = (byte)((p[0] + p[1] + p[2]) / 3); if (b > 128) b = 255; else b = 0; p[0] = b; p[1] = b; p[2] = b; p += 3; } // x p += offset; } // y } bmp.UnlockBits(data);//从内存中解除锁定 return bmp; } /// <summary> /// 亮度调节 /// </summary> /// <param name="b">Bitmap 对象</param> /// <param name="degree">亮度 Min=-255 Max=255</param> public static Bitmap KiLighten(Bitmap b, int degree) { if (b == null) { return null; } //确定最小值和最大值 if (degree < -255) degree = -255; if (degree > 255) degree = 255; try { //确定图像的宽和高 int width = b.Width; int height = b.Height; int pix = 0; //LockBits将Bitmap锁定到内存中 BitmapData data = b.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); unsafe { //p指向地址 byte* p = (byte*)data.Scan0;//8位无符号整数 int offset = data.Stride - width * 3; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { // 处理指定位置像素的亮度 for (int i = 0; i < 3; i++) { pix = p[i] + degree; if (degree < 0) p[i] = (byte)Math.Max(0, pix); if (degree > 0) p[i] = (byte)Math.Min(255, pix); } // i p += 3; } // x p += offset; } // y } b.UnlockBits(data);//从内存中解除锁定 return b; } catch { return null; } } /// <summary> /// 对比度调节 /// </summary> /// <param name="b">Bitmap 对象</param> /// <param name="degree">对比度 Min=-100 Max=100</param> public static Bitmap KiContrast(Bitmap b, int degree) { if (b == null) { return null; } if (degree < -100) degree = -100; if (degree > 100) degree = 100; try { double pixel = 0; double contrast = (100.0 + degree) / 100.0; contrast *= contrast; int width = b.Width; int height = b.Height; BitmapData data = b.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); unsafe { byte* p = (byte*)data.Scan0; int offset = data.Stride - width * 3; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { // 处理指定位置像素的对比度 for (int i = 0; i < 3; i++) { pixel = ((p[i] / 255.0 - 0.5) * contrast + 0.5) * 255; if (pixel < 0) pixel = 0; if (pixel > 255) pixel = 255; p[i] = (byte)pixel; } // i p += 3; } // x p += offset; } // y } b.UnlockBits(data); return b; } catch { return null; } } }